Expansible wrench.



F. P. DEEVER.

EXPANSIBLE WRENCH. APPLiCATION FILED JAN-18.1916- 1 1 82,46 1. Patented May 9, 1916.

INVENTOR f/fiwd. [5' J6 914v: WITNESSES ATTORNEY UNITED STATE PATENT OFFICE.

FREDERICK P. DEEVER, OF MANNINGTON, WEST VIRGINIA.

.EXPANSIBLE WRENCH.

Specification of Letters Patent.

Application filed January 18, 1916. Serial No. 72,755;

'1 '0 all whom it may c'onrw'ni Be it known that I, Fnsonnrcn P. Dnnvnn, a citizen of the United States, residing at Mannington, in the county of Marion and State of West Virginia, have invented certain new and useful Improvements in Expansible Wrenches, of which the following is a specification.

My present invention has relation to certain new and useful improvements in Wrenches and more particularly comprehends a novel form of expansible Wrench.

The primary object of my invention is to provide a novel device of this nature that is especially designed for use in connection with the positioning of pipe or well casin s in place, and one which is designed to he easily operated and which will not be liable to get out of order.

Another object of my invention is to provide a device of this character that includes complemental jaw sections that are designed to be moved into a gripping engagement with the pipe or well casing throughthe instrumentality of a flexible cable, the cable being so arranged as to apply a pressure to the jaw sections at a point substantially intermediate their ends whereby a more secure grip upon the pipe or well casing may be attained.

A further object of my invention is to provide a device of the type in question that is extremely simple in construction, strong and durable, and highly practical from both the standpoint of the manufacturer and the standpoint of the user; and

which, it isbelieved, may be manufactured at a comparatively low cost.

Various other objects and advantages will become apparent during the continuance-of the following description.

These objects are accomplished by such means as are shown in their preferred form in the accompanying drawings, described in the following specification and then more specifically pointed out in the appended claims. f

In the accompanying drawings wherein like characters designate like parts throughout the several views, Figure 1 is a' View in side elevation showing my invention as in its preferred embodiment. Fig. 2 is a view in top plan. Fig. 3 is a view in bottom plan showing more clearly the construction of the gripping faces of the jaw sections.

In reducing my invention to practice, I

first provide a pair of complemental jaw sections 10 and 11 respectively, the end of one section being recessed as at 12 and provided with a medial bearing portion 13 while the adjacent end of the other jaw section is cut away centrally as at 14 to provlde spaced bearing portions 15 to embrace the bearing portion 13 of the other section and seat within the recess portion 12 of the jaw section 10," in the manner shown in Fig. 1. When the bearings have thus been arranged in'position, a pintle or other member 16 through, whereby the jaw sections will be held in pivotal relation to each other. 7

Patented May 9, 1916.

may be journaled there-. Y

The underfaces of the jaw sections 10 with a multiplicity of forwardly directed gripping teeth 17 and 18 respectively. Consequently it will be noted that when properly operated the jaw sections may be made to assume a gripping engagement with the pipe or well casing.

With a view of providing means to connect a cable or other operating portion to the jaw sections whereby a pressure may be applied thereto intermediate the ends thereof, I first provide the jaw section 10 with an angularly projecting horn or lug 19 the lat ter extending from the section at a point intermediate its ends and being of a construction whereby it may be cast together with the respective jaw sections. The edges of the horn are rounded as at 20 to obviate the danger of cutting the cable when pres: sure is applied thereon, while the'jaw section is recessed slightly as at 21, adjacent the rear wall of the horn so as to provide for the proper seating of the cable during operation. On the other hand, thejaw section 11 is provided with an eye bearing 22,

intermediate its ends, as shown in Fig. 1,

for the reception of the other end of the cable,-this being also arranged in a position whereby the pressure applied to the respective jaw section will be directed on a point spaced from its free end so that a more secure grip may be obtained on the well or pipe casing.

The cab e or other operating member that is used isQonnected at one end with the eye bear1ng 22 as at 23 and from this point it is extended about the free terminals of the jaws, looped about the horn 19 of the jaw section 10 to seat in the recess portion 21 and formed into another loop 24 that may be effectually engaged by a suitable operating tool. Consequently it will be seen that when the jaws 10 and 11 are arranged in connection with the pipe or well casing (not shown) the cable will extend about the opposite portion of the casing so that when a pressure is applied to the free end of the cable, the same will serve to draw the jaw sections in gripping engagement with the outer surface. The pressure from the cable being applied to the intermediate portion of the jaw sections will tend to bring the same into a more firm position in connection with the casing whereby the latter may be turned with ready ease and thus be positioned in place more securely.

By reason of the specific construction of the horn 19, it will be noted that all danger of the cutting of the cable during the operation is obviated whereas the latter is proyided with a seat in the jaw 10 whereby it will be firmly engaged with the born at all times and its accidental dislodgment there from precluded.

From the foregoing it is believed that the advantages and novel features of my invention will be readily understood and thereforefurther description is deemed unneces sary.

In reducing my invention topractice I find that the form referred to herein as the most practical and preferred embodiment is the most efiicient but realizing that certain conditions will necessarily vary in concurrence with the adoption of my device, I desire to emphasize the fact that various minor changes in the details of construction and in the proportion of parts may be resorted to when required without sacrificing any of the advantages of my invention as defined in the appended claims.

Having thus fully described my inyention, what I claim as new and desire to secure by Letters Patent is 1. In an expansible wrench of the character described, complemental jaw sections,

means pivotally connecting said sections, an operating cable, means to attach one end of said cable to one of said jaw sections at a point.intermediate the ends thereof, means to be engaged by said cable intermediate the ends of the other of said jaw sections, and a loop formed at the other end of said cable whereby the same may be acted upon to draw said jaw section into gripping engagement with the work, as and for the purpose specified.

2. In a device of the character described,

complemental jaw sections, means pivotally connecting said sections, a bearing on one of said jaw sections at a point intermediate its ends, a horn on the other section at a point intermediate its ends, and an operating cable to be engaged with said eye bear- .work, as and for the purpose specified.

4. In an expansible wrench of the charac ter described, complemental jaw sections, means pivotally connecting said sections, the inner faces of said sections being arcuately curved and provided with a multiplicity of gripping teeth,-a bearing formed on one of said members at a point spaced from the free end thereof, a horn on the other ofsaid members at a point spaced from the free end thereof, an operating cable. fixed at one end to said eye bearing and arranged to extend above the opposite side of the work, said operating cable being looped about said horn, and a loop at the other end of said cable whereby the same may be acted upon to draw said complemental jaw sections into gripping engagement with the work, as and for the purpose specified.

5. In an expansible wrench of the characcable to be looped about said horn and arranged to seat in said recess, and a loop formed at the other end of said operating cable whereby it may be acted upon to draw said complemental jaw sections into gripping engagement with the work, as and for the purpose specified.

6. In an cxpansible wrench of the character described, complemental jaw sections, means pivotally connecting said sections,. the inner faces of said jaw sections being arcuately curved and provided with a multiplicity of gripping teeth, an eye bearing formed on one of said jaw sections at a point intermediate its ends, a horn formed integral with the other of said.sections at a point intermediate its ends, said horn having its edges rounded, said last mentioned section having a recess portion adjacent said horn forming a seat, an operating cable having one end fixed to said eye bearing, said jaw sections adapted to engage one side of the Work, said operating cable to be arranged around theother side of the work, said operating cable being looped to lie about said horn and engage with said seat,

and said operating cable being looped at its other end whereby it may be engaged to apply a pressure on said jaw sections at a point intermediate their ends whereby they will be forced into gripping engagement with the work, as and for the purpose specified.

In testimon whereof I aifix my signatlire in presence 0 two witnesses.

FRED. P..DEEVER.

I Witnesses:

J. D. CHARLTON, G. L. WATTS. 

